Kindness is like a mountain: metaphor is extremely deep.

Repay kindness with kindness: repay kindness with kindness, and return the behavior that is beneficial to others to those who treat themselves well.

Combination of grace and honor: Grace and honor are realized together.

Enshan Yihai: Love is as heavy as a mountain, and friendship is as deep as the sea. Describe the deep feelings.

Motto aphorism:

Drinking water does not forget to dig wells, and predecessors planted trees to enjoy the cool.

Sheep have the grace of kneeling and nursing, and crows have the meaning of feeding back.

Life needs a grateful heart to create, and a grateful heart needs life to nourish.

Accept a drop of water when necessary, and I will repay your kindness with spring water.